Which of the following hormones stimulates production of estrogen at puberty?

Options

A. FSH and LH
B. ACTH
C. TSH
D. GH.

Answer

To solve the question "Which of the following hormones stimulates production of estrogen at puberty?", we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Hormones Listed**: The question provides four options: FSH and LH, ACTH, TSH, and GH. We need to determine which of these hormones is responsible for stimulating the production of estrogen.

2. **Understand the Role of Estrogen**: Estrogen is a primary female sex hormone that plays a crucial role in the development of female secondary sexual characteristics and the regulation of the menstrual cycle.

3. **Recognize Key Hormones Involved in Estrogen Production**:
- **FSH (Follicle Stimulating Hormone)**: This hormone is responsible for stimulating the growth of ovarian follicles, which are essential for the production of estrogen.
- **LH (Luteinizing Hormone)**: This hormone works in conjunction with FSH and is responsible for triggering ovulation and the maturation of the ovarian follicles, leading to increased estrogen production.

4. **Eliminate Incorrect Options**:
- **ACTH (Adrenocorticotropic Hormone)**: This hormone stimulates the adrenal glands but does not directly influence estrogen production.
- **TSH (Thyroid Stimulating Hormone)**: This hormone regulates the thyroid gland and is not involved in estrogen production.
- **GH (Growth Hormone)**: This hormone is primarily involved in growth and metabolism and does not play a direct role in estrogen production.

5. **Conclude the Correct Answer**: Since both FSH and LH are crucial for the stimulation of estrogen production at puberty, the correct answer is **FSH and LH**.

### Final Answer:
The hormone that stimulates the production of estrogen at puberty is **FSH and LH**.

---